There are some situations where seeking sole custody is not just possible — it is necessary. If you are divorcing a spouse who has been abusive or neglectful to the children, or who has a drug or alcohol addiction that causes them to behave unsafely when they are with the kids, you have to do everything within your power to make sure that the court awards sole custody to you.
Divorce can be a humbling experience in the best of circumstances. When it's particularly acrimonious, with hurled insults or salacious allegations, it's a far worse scenario.
It is never easy for parents to negotiate dividing up time with their child, even when everyone involved wants a civil, respectful divorce or separation. The time we get to spend with our children is one of the most precious things we have, and many parents feel pulled to seek as much custody time with their child as they can obtain, whether it is best for the child or not.
Summer custody arrangements can foil even the most well-intentioned parents if they fail to plan ahead. This is especially true for those parents who have just divorced or split up with their former partners.
It might not have been evident before you got married, but at some point after your wedding, it became apparent that you married a narcissist. When you decide to finally pull the plug on a no longer tenable marriage, you can also expect your spouse's narcissistic behavior to increase.